US456737A

US456737A - sohultz

Info

Publication number: US456737A
Authority: US
Publication date: 1891-07-28
Anticipated expiration: 1908-07-28

Description

(No Model.) 2 Sheets-Sheet -1.

L. SGHULTZ. QUILTING MAGHNE.

Patented July 28, 1891.

ma cams versus co., pnqnruma., msmmswwA n. c.

` 2 Sheets-.Sheet 2. L. .SCHULTZ (No Model.)

UNITED STATES PATENT OFFICE.

LOUIS SCHUL'IZ, OF NElV YORK, N. Y., ASSIGNOR TO THE EXCELSIOR QUIL'IING CiOB/IPANY, OF SAME PLACE.

QUILTING-IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 456.737', dated July 28, 1891.

Application led October l5, 1889. Serial No. 327,096. (No model.)

To @ZZ whom it may concern.'

' Be it known that I, LOUIS SCHULTZ, of New York, in the county and State of New York, have invented a certain new and useful lmprovement in QuiltingMachines, of which the following` is a specification.

I will describe a quilting-machine embodying my improvement, and then point out the novel features in the claims.

ln the accompanying drawings, Figure i is a back view ot a machine embodying my improvement, certain parts being broken away to economize space. Fig. 2 is a plan or top view of the machine, certain parts being represented in section. Fig. 3 is a transverse vertical section taken at the plane of the dotted line r no, Fig. 2, and looking in the direction indicated by the arrow which is contiguous to such line. Fig. l is a transverse vertical section taken at the plane of the dotted line y y, Fig. 2, and looking in the direction indicated by the arrow which is contiguous to such line. Fig. 5 is a horizontal section ot' a portion of the machine, taken at the piane of the dotted line e' z, Fig. l. Fig. is a face View of a piece of quilted fabric, which may be worked in this machine.

Similar letters rof reference designate corresponding parts in all the figures.

A designates the bed of the machine. As here shown, it is supported on legs A.

B B2 designate two side frames, secured in the present instance to the bed A bybolts or otherwise to occupy parallel positions.

C designates the needle-bar. This has secured to it a series of needles C, which, in the present instance, are arranged in two rows, so that the needles ot the second row will be behind those ot' the iirst row and op posite the spaces between those of the first row. This arrangement of the needles may be understood by reference to Figs. l and 3, where some of the needles are represented, and it also may be understood by reference to the zigzag row of circles, which in Fig. 2 represent holes in the cover ot' the shuttle or loop-chamber.

Secured to the needle-bar are a nnmber of upright rods c, which work vertically within brackets b, attached to the front of the bar C, and are connected at the upper end by links c' with arms c?, atlixed to a rock-shat`t C2. On the rockshaft are other arms c3, and these are connected with rods c, secured to a pressenfoot bar. rlhe rock-shaft is oscil lated by means of a rod C, deriving motion from a crank C", arranged upon a shaft D. The shaft D is driven from a driving-shaft D through the agency of a small gear-wheel (Zw, atiixed to the shaft D', and a large gear-L wheel d, atiixed to the shaft D. The shaft D will obviously be driven at a less rapiti speed than the speed of thedriving-shaft D. It will, however, be driven constantly when the machine is in operation, and hence during the entire operation of the machine the needles will operate. It will be readily understood that the rock-shaft imparts a vertically-reciprocating motion to the needle-bar and needles. The needles in this machine have only an up-anctdown movement.

-In the machine is included shuttle mechanism, and E designates the race-bartherefor.

In the present example of the improvement the fabric to be quilted is fed lengthwise un der the needles and also moved laterally. Rollers F F2 serve to move it longitudinally. These rollers are supported in a carriage G G2 G3. This carriage consists of two side frames G G2 and rods G3, securing them together. It is free to move in any direction in a horizontal plane. As shown, these side frames G' G2 have secured to them rollers R', extending widthwise of the machine parallel with the needle-bar and j ournaled in brackets fastened to the lower extremities ot' the side frames. Beneath these rollers R are pairs of rollers R2, extending forwardly and backwardly ot the machine and journaled in brackets secured to the bed A. The rollers R rest upon and are supported by the rollers R2. It will readily be understood that the rollers R may roll upon the rollers R2 in the direction ot the axes of the latter, so as to enable the carriage to move backwardly and forwardly, and that the rollers R2 can-rotate un der the rollers R to enable the carriage to move laterally, or, in other words, lengthwise of the needle-bar. The feed-roller F is journaled in the side trames G G2 of the carriage. The roller F2 is journaled in levers G4, which are fulcrumed between their ends by pins or IOD l it a gear-wheel cl2.

bolts g to the 'side frames G G2 of the carriage. At the rear ends the levers G4 are connected to springs G5, attached to screws G, engaging with upright bars fastened to the side frames of the carriage. These springs force the roller F2 with greater or less pressure toward the roller F.

The fabric to be quilted is at first rolled on a roller R, attached to the carriage. Thence it is drawn by the feed-rollers over an apron P, extending beneath the needles and attached to the carriage.

The feed-rollers F F2 are geared together by gear-wheels f, affixedvto their journals at one end. lTo the roller F is affixed a gearwheel f2. The gear-wheel f2 derives motion from a gear-wheel f3, affixed to shaft F, which is supported at one end in the side frame B2 of the carriage. The shaft F does not partake of the lateral movement of the carriage.l Hence there must be a relative Sliding movement between it and the carriage. Because of this the gear-wheel f3 is to be secured to the shaft F by means of a spline or feat-her and connected to the bearing of the carriage receiving the shaft F, so that the gearwheel will move with the carriage and have a sliding` movement relativelyT to the shaft F. The shaft F is connected by a universal joint f4 to a shaft F4. This shaft F4 is supported in bearings f5, supported by the bed A ofthe machine.

Owing to the universal joint between the shaft-s F and F4, the carriage is able to move forwardly and backwardly. It is therefore possible for the carriage to move in any and all directions in a horizontal plane without interfering with the transmission of rotary motion to the feed-rollers.

The shaft F4 has mounted on it a gearwheel f, and the latter, and through it the shaft F4, derives motion periodically from a toothed segment ff, affixed to a shaft F5. This shaft Fs is supported in a bracket or stand erected upon the bed A.

The manner in which the shaft F5 is rotated is an important feature of the present improvement. I will now describe itin detail. The driving-shaft D has affixed to it a gearwheel d, which engages with a gear-wheel d', which in the present instance is' loosely supported upon the shaft D and has affixed to Obviously any rotary motion transmitted to the wheel d will also be transmitted to the wheel (Z2. The wheel d2 engages with a gear-wheel d3, mounted upon a shaft D2, supported in a bracket d", erected upon the bed A. The wheel d3 is arranged at one side of the segment f7, and is provided upon that side which is adjacent to the segment fT with a groove. This groove extends in the direction of a radius of the wh eel. In the present instance this groove is formed by affixing two parallel bars d5 to the wheel cl3. The bars may be affixed by casting, or formed Separately, and attached by screws or otherwise. Between these bars ablock d is so arranged that it may move lengthwise of the bars. The Segment]07 is provided near that end which enters the wheel f(i each time the segment engages with said wheel with a pin di, which extends into the block d. Obviously the same effect might be produced by afiixing a pin to the block and extending it through a hole in the segment. As the wheel d3 rotates, it imparts a rotary motion to the segment fl with a variable speed, In Fig. t the segment is represented as just about entering` the wheel f, and it will be observed that the pin (ZT is near the axis of the wheel d3. The motion imparted to the segment at the start will therefore be a'very slow one; but as the rotation-continues the pin (Z7 will gradually become nearer to the periphery of the wheel di? and the motion imparted by the wheel cl3 to the segment]c7 will grow more rapid.

It will be readily understood that only when the segment ff engages with the gear-wheel f is motion transmitted to the feed-rollers. In making such apattern as illustrated in Fig. G itwill only bc necessary to operate the feed-rollers to shift or feed the fabric from one row of circles to the next corresponding row of circles, and this is what is accomplished by the periodical driving through of the segment fl, in the manner described.

It may not be desirable to have the segment f7 impart motion to the gear-wheel f and shaft F4 in each revolution of the segment. Owing to this I connect the gear-wheel f with the shaft F4, so that it. may slide lengthwise of said shaft into and out of the plane of thev segment, it being connected to the shaft by a spline or feather, so as to rotate therewith.' I have shown the hub of the wheel f as provided with a circumferential groove receiving an arm f2" on a bar or plate J. This bar or plate is shown as provided with bowls or rollers coacting with cams J J2, affixed to a shaft F6. These cams serve to impart such a movement to the bar or plate as to cause the movement of the gear-wheel f into and out of the plane of the segmentf. The shifting of the wheel fG will be performed quickly between one descent of the needles and the next following descent thereof and without providing for any unusual dwell of the needles.

F21 is a cam affixed to the shaft F6 and operating a brake-lever F22, employed for the purpose of gradually checking the rotation of the shaft Ftwhen it becomes disengaged-from the toothed segment ff. As here shown, this brake consists of a lever fulcrumed by a pin f22 to a standard or bracket, and having at one end an adjustable bearing-plate f21coacting with the cam, and at the other end a pad bearing against a wheelfli, which is affixed to the shaft F4. This wheel f1's is not merelyemployed to coact with the brake,but is provided with teeth to serve as a lockwheel. Its teeth coact with a stop fiange or disk f, affixed to the shaft F6. The stop IOO IIO

flange or disk f is circular in form, but has a notch or opening in its periphery. Except when this notch comes opposite the lock-\vl1eel fm, the stop ange or disk engages with the lockwheel f1 and holds the latter against ro tation. While the shaft F4, carrying this lock-wheel, is thus held against rotation, the feed-rollers are precluded from rotating. One end of the notch or opening in the stop flange or disk comes opposite the lock-wheel fl j ust before one end of the toothed segmentfT en ters into engagement with the gear-wheel f on the shaft F4, and the notch or opening is not carried beyond the lock-wheel until after said toothed segmenthas gone out of engagement with the wheel f6. It follows, therefore, that the stop flange or disk locks the shaft F4 and the feed-rollers at all times, except when the toothed segment f7 engages with the wheel f to rotate the shaft Il and the feed-rollers. The shaft F derives its rotary motion through a gear-wheel f l, which is affixed toit, and engages with a worm f1", affixed to the shaft I).

On one of the journals of the roller F may be affixed a pulley Il to enable the roller to transmit rotary motion to a roller upon which the completed fabric will be taken up or Wound.

Having now described Ithe mechanism by which rotary motion is imparted to the feedrollers, and explained the mot-ions imparted to the carriage, I will now describe themeans which are here employed for producing the motions of the carriage.

I designates an upright shaft, supported from the bed A and having affixed toita cam I. This cam operates in conjunction with two bars or plates 1213, fitted to slide in bearings and provided with bowls or rollers t'. The bar or plate I2 is connected to a bar G4, secured to the carriage G G2 G3, and this bar or plate extends lengthwise of the machine. It will be obvious that the carriage will be moved laterallyT by the action of the cam I upon the bar or plate I2. The bar or plate I3 is provided with a toothed rack which engages with a toothed segment I5, affixed to a shaft It, journaled in bearings supported by the bed A. The shaft I4 has affixed to it two toothed segments I, and these engage with toothed racks I, secured to the carriage G G2 G3. It will be obvious that whenever the cam I imparts a movement to the bar or plate I3 this motion will be transmitted to the carriage and will cause the carriage to move backward and forward. The cam I', it will be seen, serves to produce a movement of the carriage in two different directions, and these combined movements will result in a movement of the carriage in a circular or other sinuous path. By varyin g the cam the movement of the carriage will be varied. It will be seen that the cam is stepped and that the bars or plates I2 I3 are longitudinally slotted to embrace the shaft I. The stepping of the cam is not, however, essential, and the bars or plates maybe made differently. The shaft I is shown as having affixed to it a wormwheel il, which engages with a worm fg, affixed to the shaft D. In the presentinstance the shaft l is so timed as to make two rcvolutions for one of thcshaft F, and consequently for each shifting of the gear\vl1eelfli into the plane of the segment f7. This relation is adopted so that the needles may sew the circles twice around before the feed-rollers shift the goods.

I have other applications for Letters Pat` ent numbered serially 327,451 and 326,671, showing some combi-nations of parts which are herein represented and not herein claimed. I therefore reserve the right to claim in the other applications the novel combinations not herein claimed.

IVhat I claim as my invention, and desire to secure by Letters Patent, is

I. In a sewingqnachine, the combination of a carriage for moving material to be stitched in a circular or asimilar path, mechanism for imparting the requisite movement to the carriage, feed-rollers supported by the carriage and operated so as to remain stationary during the movement of the carriage and to rotate while the carriage is at rest, and a series of needles which are reciprocated by mechanism substantially such as described at anniform speed during the movements of the car.- riage and feed-rollers, substantially as specified.

2. In a sewing-machine, the combination of a series of needles reciprocating constantly by mechanism substantially such as described during the operation of the machine, a carriage for moving material to be stitched in a circular or a similar path, mechanism substantially such asdescribed for causing the movements of said carriage, feed-rollers supported by the carriage and operated so as to remain stationary during the movement of the carriage and to rotate while the carriage is at rest, a segment, mechanism for operating the segment, a sha-ft transmitting motion to the feed-rollers, and a wheel sliding axially on said shaft into and out of the plane ot' the segment, substantially as specified.

3. In a sewing-machine, the combination of a carriage for supporting material to be stitched, mechanism for moving said carriage periodically in a circular or a similar path, feed-rollers journaled in said carriage and mechanism whereby said rollers will be held stationary during the movement of the carriage and rapidly rotated when the carriage comes to rest, a series of needles, and mechanism for reciprocating the needles continuously during the entire operation of the machine, substantially as specified.

et. In a sewing-machine, the combination of a series of needles reciprocating constantly by mechanism substantially such as described during the operation of the machine, a carriage for moving material to be stitched in a circular or a similar path, mechanism substantially such as described for moving the carn ICO IIO

IIS`

for the shaft of the sliding Wheel, and a cam' for effecting the operation of said brake when the sliding wheel is moved out of the plane (t Cthe toothed segment, substantially as speci- 5. In a sewing-machine, the combination of Y*a series of Yneedles reciprocating"constantly during the operation of the machine, a carriage for moving material to be stitched in a circular or a similar path, feed-rollers snpported by the carriage and operated so as to remain stationary during the movement of the carriage and to rotate While the carriage is at rest, a toothed segment, a shaft transmitting motion to the feed-rollers, a Wheel on said shaft receiving motion from the toothed segment, and a wheel imparting motion to the toothed segment through a groove and block or rib, substantially' as specified.

G. In a sewing-machine, the combination of a series of needles reciprocating constantly during theoperation of the machine, a carriage for moving material to be stitched in a circular or a similar path, feed-rollers supported by the carriage and operated so as to remain stationary during the movementof the carriage and to rotate While the carriage is at rest, a toothed segment, a shaft transmitting motion to the feed-rollers, awheel on said shaft sliding into and out of the plane of the toothed segment to periodically receive motion therefrom, a cam for moving said sliding Wheel, and a Wheel for imparting motion to the toothed segment and connected therewith by means of a groove and block or rib, Substantially as specified.

7. In a sewing-machine, the combination of a series of needles reciprocating constantly during the operation of the machine, a carriage tor moving material to be stitched iny a circular or a similar path, feed-rollers snpported by the carriage and operatedso asY to remain stationary during the movement of the carriage and to rotate While the carriage is at rest, a toothed segment, a shaft transmitting mot-ion to the feed-rollers and deriving motion from thetoothed segment, a wheel for imparting motion to the toothed segment and connected ltherewith through a groove and block or rib, a bar or plate connected with the carriage aforesaid, a cam operating this bar or plate, a second bar or plate operated by the Vsame cam, and a rock-shaft de riving motion from the second bar or plate and imparting it to the carriage, substantially as specified.

LOUIS SGHULTZ.

\Vitnesses: l

C. R. FERGUSON, XVM. M. ILIFF.